trim_test.php

<?php
/**
*
* @package phpBB3
* @copyright (c) 2014 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/

/**
*/

/**
* @ignore
*/
define('IN_PHPBB', true);
$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './';
$phpEx = substr(strrchr(__FILE__, '.'), 1);
include($phpbb_root_path . 'common.' . $phpEx);

// Start session management
$user->session_begin();
$auth->acl($user->data);
$user->setup();

$user_cnt = $request->variable('users', 5);

$user->lang = array_merge($user->lang, array(
	// This applies for NOTIFICATION_BOOKMARK, NOTIFICATION_POST, and NOTIFICATION_QUOTE.
	// %1$s will return a list of users that's concatenated using "," and "and" - see STRING_LIST
	// Once the user count reaches 5 users or more, the list is trimmed using NOTIFICATION_X_OTHERS
	// Examples:
	// A replied...
	// A and B replied...
	// A, B and C replied...
	// A, B, C and 2 others replied...
	'NOTIFICATION_BOOKMARK'				=> array(
		1	=> '%1$s replied to the topic “%2$s” you have bookmarked.',
	),
	'NOTIFICATION_POST'					=> array(
		1	=> '%1$s replied to the topic “%2$s”.',
	),
	'NOTIFICATION_QUOTE'				=> array(
		1	=> '%1$s quoted you in the post “%2$s”.',
	),
	// Used in conjuction with NOTIFICATION_BOOKMARK, NOTIFICATION_POST, and NOTIFICATION_QUOTE.
	'NOTIFICATION_X_OTHERS'				=> array(
		2	=> '%d others',
	),	
	'STRING_LIST'						=> array(
		1 => '%1$s',
		2 => '%1$s and %2$s',
		// At 3 or more, %1$s returns comma separated items. So output would be: X, Y and Z
	),
));

$output = '';
$users = array('A', 'B', 'C', 'D');

for ($i = 1; $i <= $user_cnt; $i++)
{
	$responders = array_slice($users, 0, $i);

	if ($i > 4)
	{
		array_splice($responders, 3);
	}
	$trimmed_responders_cnt = $i - sizeof($responders);

	if ($trimmed_responders_cnt)
	{
		$responders[] = $user->lang('NOTIFICATION_X_OTHERS', $trimmed_responders_cnt);
	}
	$user_list = phpbb_gen_string_list($responders, $user);

	$output .= $user->lang('NOTIFICATION_BOOKMARK', $user_list, 'Testing', $i) . '<br />';
	$output .= $user->lang('NOTIFICATION_POST', $user_list, 'Testing', $i) . '<br />';
	$output .= $user->lang('NOTIFICATION_QUOTE', $user_list, 'Testing', $i) . '<br /><br />';
}

trigger_error($output);


/**
* Concatenate an array into a string list.
*
* @param array $items Array of items to concatenate
* @param object $user The phpBB $user object.
*
* @return string String list. Examples: "A"; "A and B"; "A, B and C"
*/
function phpbb_gen_string_list($items, $user)
{
	$count = sizeof($items);
	$last_item = '';

	if ($count > 1)
	{
		$last_item = array_pop($items);
	}
	$list = implode($user->lang['COMMA_SEPARATOR'], $items);

	return $user->lang('STRING_LIST', $list, $last_item, $count);
}